Track-lighting fixture



FIG. 1 is a front elevational view of a track-lighting fixture showing our new design;

FIG. 2 is a top, front, and right side perspective view thereof;

FIG. 3 as a rear elevational view thereof;

FIG. 4 as a right-side elevational view thereof;

FIG. 5 as a left-side elevational view thereof;

FIG. 6 as a top plan view thereof; and,

FIG. 7 as a bottom plan view thereof.

The broken-line disclosure in the views is understood to represent portions of the article which form no part of the claimed design. 

CLAIM The ornamental design for a track-lighting fixture, as shown and described. 